https://bugzilla.wikimedia.org/show_bug.cgi?id=54988
Web browser: ---
Bug ID: 54988
Summary: Web API: Support body-only and section retrieval from
cache with range headers and internal range request
Product: Parsoid
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Web API
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Mobile Platform: ---
For ESI and some mobile use cases (first section retrieval) we need to be able
to return just the body or even just the first section of the body from the
cache. Range requests can be used to do this while sharing the same cache
entry. To avoid a need for the client to know the ranges, we can set headers on
our content that indicate those ranges. In Varnish, we can then simulate a
range request internally with the offsets from those headers. This can be
triggered with a special request header. ESI might indicate sub-requests in
headers already. Mobile would need to set another header explicitly.
Possible header:
Range: part=firstsection
(compare normal range requests with 'Range: bytes=1-5')
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